Random stuff, reduction, servo motors, ideas and thoughts
thefabricator03 wrote: Two words, CNC Mill.
I am hoping to have one by the end of the year. From watching videos it sure seems to make making motor mounts and such a breeze. Need another part, just load the material and run the program again. I really cannot wait
yeah that's why i am building what i have so far. manual machining sucks takes so long just to make something. the down side to a VMC is price and travel restrictions. small parts like a motor mount you can't beat them. long parts suck to make when you have to work on it in sections. the more set ups you have the more chance you have for error to add up on you. industrial gantry mills start at about 150,000 for a base model. small VMC might be had for around 75,000. they are not cheap but are nice to work with.
If I have to I could buy a block of land and build a decent sized shed to put it in. Would need to work out a way to make money from it regularly tho. I am sure if I added enough steel I could make it pretty rigid.
If u just want to get staight rails:
I think u could run a milling device that is controlling its "hight versus part" only by measuring a laser beam parallel to the part.
They are in US, i helped them when they started, and most importantly i think they will sell just the frame.
machinedude wrote: depends on the design of the frame too. if you want side mounted rails then you probably want a 5 axis with the cutting head that can rotate and pivot so you can do the entire table in on shot. that's how you get high precision and true squareness. this is a whole new level of build. if you want to build them fast this is the way to go. i bolted everything together on mine so i had some control over datum points. this was the only way to keep things straight and square with a small milling machine. and it took forever with a manual mill
Yeah that would be the goal. I would also like to machine the side rails flat on a plasma table after welding so a rotating head would definantly be needed.
when you start splitting hairs you have to do lots of extra stuff to make it happen. any kind of item that has been welded should be stress relieved after. machining will making it closer but what happens is as you cut the part moves from internal stresses from being welded. the same way you welders will tack around the parts to keep things from moving to much could be compared to machining a part that has not be stress relieved by taking light cuts and creeping up on sizes.but the same problems are there, you manage the movement by reducing it a lot but you still have small amounts of bow and twist.
the way you hold your work matters too. if you are working the bow from something you have to go about it the right way. usually your first cuts are in a way the keeps the piece in a free state. once it's flat in a free state you can pull it down with clamps or hit the part down in a vise.
fun stuff when you start to work on closer stuff yet you cross over to the next level and get into surface grinding that end of the of the trade tends to make you crazy if you stick around to long